AuthorTopic: A physical chemistry problem (Read 5476 times)

I have difficulty solving an exercise in Physical Chemistry of Atkins.A diving bell has an air space of 3.0 m3 when on the deck of a boat. What is the volume of the air space when the bell has been lowered to a depth of 50 m? Take the mean density of sea water to be 1.025 gcm- 3 and assume that the temperature is the same as on the surface. The answer is 0.5m3, however, I don't know how to solve the problem as I don't know what the relationship between the density and the volume when temperature is constant apart from : V =mD, but it can't be praticed in this case.Thank you for reading and helping me solve this